How would you define and measure the predictive power of a metric?

How would you define and measure the predictive power of a metric?



-Predictive power of a metric: the accuracy of a metric's success at predicting the empirical
-They are all domain specific
-Example: in field like manufacturing, failure rates of tools are easily observable. A metric can be trained and the success can be easily measured as the deviation over time from the observed
-In information security: if the metric says that an attack is coming and one should do X. Did the recommendation stop the attack or the attack never happened?

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